/*
 * Copyright 2002-2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.beans.factory.annotation;


/**
 * Enumeration determining autowiring status: that is, whether a bean should have its dependencies automatically
 * injected by the Spring container using setter injection. This is a core concept in Spring DI.
 * <p>
 * Available for use in annotation-based configurations, such as for the AspectJ AnnotationBeanConfigurer aspect.
 * 
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @since 2.0
 * @see org.springframework.beans.factory.annotation.Configurable
 * @see org.springframework.beans.factory.config.AutowireCapableBeanFactory
 */
public enum Autowire
{

    /**
     * Constant that indicates no autowiring at all.
     */
    NO( 0 ),

    /**
     * Constant that indicates autowiring bean properties by name.
     */
    BY_NAME( 1 ),

    /**
     * Constant that indicates autowiring bean properties by type.
     */
    BY_TYPE( 3 );

    private final int value;

    Autowire( int value )
    {
        this.value = value;
    }

    public int value()
    {
        return this.value;
    }

    /**
     * Return whether this represents an actual autowiring value.
     * 
     * @return whether actual autowiring was specified (either BY_NAME or BY_TYPE)
     */
    public boolean isAutowire()
    {
        return ( this == BY_NAME || this == BY_TYPE );
    }

}
